National Insurance and Tax Calculator UK
Use our national insurance and tax calculator uk to calculate income tax and national insurance uk contributions for both employees and employers.
National Insurance and Tax Calculator UK
Calculate your National Insurance contributions (Employee & Employer) alongside UK Income Tax.
Understanding UK National Insurance & Tax Deductions
In the UK, National Insurance (NI) is a fundamental tax paid by workers and employers to fund state benefits, including the UK State Pension, statutory maternity pay, and the NHS.
Whether you are looking for a ni tax calculator uk, a uk national insurance calculator, or an employer ni calculator uk, our tool aligns with the latest gov uk national insurance calculator rules for 2025/2026.
National Insurance Rates & Bands (2025/2026)
Here is a breakdown of rates used in our national insurance tax calculator uk:
| NI Class & Type | Earnings Threshold | Applied Rate | Notes |
|---|---|---|---|
| Class 1 Employee (Primary) | £12,570 to £50,270 | 8% | Deducted via PAYE on monthly earnings over £1,048 |
| Class 1 Employee (Upper) | Over £50,270 | 2% | Applies to earnings above £4,189 per month |
| Class 1 Employer (Secondary) | Over £5,000 | 15% | Paid directly by employer on employee earnings |
| Class 2 Self-Employed | Over £12,570 | Flat rate / Exempt | Voluntary contributions for qualifying State Pension years |
| Class 4 Self-Employed | £12,570 to £50,270 | 6% | Calculated on net self-employed profits |
Employer Secondary Class 1 NI Calculator UK
If you operate a UK business or employ staff, employers pay Employer Secondary Class 1 National Insurance on employee earnings above £5,000 per year at a rate of 15%.
Use the "Employer NI" tab in our ni calculator uk to calculate the total employment cost (Gross Salary + Employer Secondary NI) for any employee.
How to Check Your UK NI Contributions & State Pension Qualifying Years
Using a uk ni contributions calculator helps you ensure you earn above the Primary Threshold (£12,570) or Lower Earnings Limit (£6,396) so that each tax year counts as a qualifying year for your UK State Pension.
To receive the full new UK State Pension, individuals generally need 35 qualifying National Insurance years on their HMRC record.
Need to Update Your National Insurance Record After Changing Your Name?
When changing your name by Deed Poll, you must inform HMRC to ensure your National Insurance number and employment tax records remain correctly linked to your new legal name.
Frequently Asked Questions — National Insurance and Tax Calculator UK
What is the current Employee National Insurance rate in the UK?
For Class 1 employees, National Insurance is charged at 8% on earnings between £12,570 and £50,270 per year (£1,048 to £4,189 per month), and 2% on earnings above £50,270.
How much is Employer National Insurance in 2025/2026?
Employers pay 15% Secondary Class 1 National Insurance on employee earnings above £5,000 per year, subject to the Employment Allowance if eligible.
How do I notify HMRC of a name change on my National Insurance record?
You can report a name change to HMRC online via your Personal Tax Account or by posting a copy of your signed Deed Poll along with your National Insurance number.